Potamogeton nodosus
PNW
BC
ID
MT
OR
WA
127 specimens from 20 herbaria:
British Columbia (11)
Idaho (36)
Montana (7)
Oregon (40)
Washington (33)
64 images from 14 herbaria:
BABY (1)
BBLM (2)
BBLM-OWY (1)
BLMVL (2)
CIC (19)
HPSU (2)
ID (13)
IDE (5)
IDS (6)
MONT (2)
MONTU (1)
SRP (2)
WTU (7)
WWB (1)